| 圆转矩形喷管射流掺混特性试验 |
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| 引用本文： | 张勃,吉洪湖,黄伟,曹广州,杨海.圆转矩形喷管射流掺混特性试验[J].航空动力学报,2009,24(11):2476-2482. |
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| 作者姓名： | 张勃 吉洪湖 黄伟 曹广州 杨海 |
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| 作者单位： | 1. 南京航空航天大学,能源与动力学院,南京,210016
2. 中国航空工业集团公司,沈阳发动机设计研究所,沈阳,110015 |
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| 摘 要： | 采用热线风速仪对圆转矩形收敛喷管的射流流场与掺混特性进行了试验研究,测量了喷口下游不同截面上,射流宽,窄对称面上的速度、雷诺剪应力、湍流强度的分布规律.发现沿径向,雷诺剪应力先增大后减小,最大值出现在射流与外流的交界面附近,湍流强度则逐渐减小;在轴向七,雷诺剪应力在近喷口区存在小幅波动,而后逐渐减小,湍流度则先略有增大而后变化逐渐减慢.射流特性在宽对称面与窄对称面上的分布规律相同.
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| 关 键 词： | 圆转矩形喷管 射流 雷诺剪应力 湍流强度 |
| 收稿时间： | 2008/10/15 0:00:00 |
| 修稿时间： | 3/5/2009 12:00:00 AM |
Experimental investigation of mixing characteristics of jet from circle-rectangular transition nozzle |
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| ZHANG Bo,JI Hong-hu,HUANG Wei,CAO Guang-zhou and YANG Hai.Experimental investigation of mixing characteristics of jet from circle-rectangular transition nozzle[J].Journal of Aerospace Power,2009,24(11):2476-2482. |
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| Authors: | ZHANG Bo JI Hong-hu HUANG Wei CAO Guang-zhou and YANG Hai |
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| Institution: | College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;Shenyang Aeroengine Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China |
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| Abstract: | In order to measure the flow field and mixing characteristics of the jet from rectangular nozzle,the single incline hot-wire was used in the experiments.The results show that,the strongest mixing appears radially near the interface of ambient gas and jet,and causes the maximum value of Renaults shear stress in the same position,while the turbulent intensity decreases radially.Reynolds shear stress decreases axially,while turbulent intensity increases a little,and then decreases axially. |
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| Keywords: | circle-rectangular transition nozzle jet Reynolds shear stress turbulence intensity |
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